| Strain | Pseudomonas putida F1 |
| GI | 148547746 |
| Locus Tag | Pput_2529 |
| Description | cytosine permease |
| Strain | Pseudomonas fluorescens Pf0-1 |
| GI | 77460000 |
| Locus Tag | Pfl01_3778 |
| Description | cytosine permease |
| Strain | Pseudomonas aeruginosa PA7 |
| GI | 152984766 |
| Locus Tag | PSPA7_0539 |
| Description | cytosine permease |